Wheel center



FIG. 1 is a side elevation view of a wheel center showing my new design;

FIG. 2 is a top plan view thereof on a reduced scale;

FIG. 3 is a sectional view taken along the plane III--III of FIG. 1;

FIG. 4 is a sectional view taken along the plane IV--IV of FIG. 1 and rotated 67.5 degrees counterclockwise; and

FIG. 5 is a sectional view taken along the plane V--V of FIG. 1 and rotated 90 degrees counterclockwise.

The opposite side of the wheel center is the same in appearance as FIG. 1 except the ridges and valleys are rotated 45 degrees. 

The ornamental design for a wheel center, substantially as shown and described. 